code: def dtype(self):
      return getattr(self, "_dtype", None)
  
file_path: mars/mars/tensor/fetch/core.py
imports: from ...core import register_fetch_class, OutputType
  from ...core.operand import Fetch, FetchShuffle, FetchMixin
  from ...serialization.serializables import DataTypeField
  from ..operands import TensorOperandMixin
label_desc: Use image node_id 2 for calling the TensorFetchShuffle obj's underlying member method code with example usage: obj.dtype() and returns: getattr